1. What is the primary function of the integumentary system in animals?
(A) Circulation
(B) Protection
(C) Digestion
(D) Respiration
2. Which of the following animals is known for its ability to undergo estivation to survive extreme heat?
(A) Polar bear
(B) Kangaroo rat
(C) African lungfish
(D) Penguin
3. In mammals, which organ is primarily responsible for filtering blood and producing urine?
(A) Liver
(B) Stomach
(C) Kidneys
(D) Lungs
4. What adaptation helps camels survive in desert environments?
(A) Thick fur
(B) Hibernation
(C) Fat stored in humps
(D) Webbed feet
5. Which type of adaptation allows Arctic foxes to survive in cold environments?
(A) Thick fur and fat layers
(B) Long legs for running
(C) Bright coloration for camouflage
(D) Slim bodies for heat dissipation
6. What physiological process is used by animals to regulate their body temperature?
(A) Photosynthesis
(B) Thermoregulation
(C) Metamorphosis
(D) Osmoregulation
7. Which animal adaptation is primarily used for avoiding predators?
(A) Hibernation
(B) Camouflage
(C) Estivation
(D) Photosynthesis
8. Which of the following is an example of a behavioral adaptation in animals?
(A) Sharp claws
(B) Fur coloration
(C) Bird migration
(D) Thick skin
9. What is the primary advantage of the counter-current heat exchange system in some animals?
(A) Enhancing oxygen absorption
(B) Reducing water loss
(C) Preventing overheating
(D) Conserving body heat
10. How do desert animals like the kangaroo rat minimize water loss?
(A) By sweating profusely
(B) By producing highly concentrated urine
(C) By drinking large amounts of water
(D) By living near water sources